@misc{indiciae29cb49451139,
  title = {Preliminary geologic map and coal sections of the Willow Crossing Quadrangle, Rosebud and Powder River counties, Montana},
  author = {E. J. McKay},
  year = {1976},
  doi = {10.3133/mf802},
  url = {https://pubs.usgs.gov/publication/mf802},
  note = {Source identifier: mf802}
}